5 Purposes of silicone sealant in construction Industry :

Structural Sealant


Silicone sealants are extensively utilized in architectural applications such as curtain walls, doors, windows, insulating glass, and interior decoration. They are categorized into five main types based on their intended purpose: structural, weatherproof, ordinary, secondary  for insulating glass, and special-purpose silicone sealant.

  1. Structural Silicone:
    • Purpose: Primarily used for bonding glass and aluminum subframes structurally and for secondary sealing in hollow glass of hidden frame curtain walls.
    • Features: Designed to withstand wind and gravity loads, with high requirements for strength, aging resistance, and a certain level of elasticity.
  2. Weatherproof Silicone :
    • Purpose: Used for joint sealing to ensure airtightness, water tightness, and other protective properties.
    • Features: Must withstand significant changes in joint width, requiring high elasticity, aging resistance, and varying levels of modulus, with low strength requirements.
  3. Ordinary Silicone :
    • Purpose: Employed for sealing door and window joints, as well as external wall joints.
    • Features: Capable of accommodating changes in joint width with moderate displacement capacity requirements and lower strength demands.
  4. Secondary Silicone  for Insulating Glass
    • Purpose: Used for double-sealing insulating glass to maintain its structural stability.
    • Features: Typically characterized by high modulus, avoiding excessive softness, and sometimes necessitating specific structural requirements.
  5. Special Purpose Silicone :
    • Application: Tailored for joint sealing with specialized requirements such as fire prevention or mildew prevention.
    • Features: Requires special properties like mildew prevention or fire resistance to meet specific needs.

Silicone sealants exhibit distinct performance characteristics for different purposes, making them non-interchangeable. Using the wrong sealant type for a particular application can result in significant quality and safety hazards. Therefore, proper selection of sealants according to the specific requirements of each application is crucial.

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